Allergic redness and swelling of the face is due to allergic inflammatory reaction stimulation, resulting in dilatation of facial capillaries and excessive accumulation of tissue fluid. Patients should promptly seek medical attention and follow medical advice on medication, internal and external medication with obvious effects on swelling. External medications: 1. wet compresses: boric acid solution can be used for wet compresses, with anti-inflammatory, anti-swelling, antibacterial, astringent and cleansing effects; 2. hormonal drugs: redness and swelling can be applied in small doses for a short time, but avoid long-term application, because long-term use can cause facial capillary dilation, pigmentation, etc.; 3. non-hormonal drugs: such as zinc oxide cream, vitamin E cream, etc. Second, internal medication with oral anti-allergy drugs, that is, antihistamine drugs, such as chlorpheniramine maleate tablets, dexrazoxane, etc., the effect of reducing swelling is obvious. During the treatment of facial allergy, pay attention to avoid spicy and irritating food, use water to cleanse the face, prohibit cosmetics, and pay attention to avoiding light.